The distribution and variation of elements in sediments off the Huanghe (Yellow) River mouth

作     者：乔淑卿 石学法 高晶晶 刘焱光 杨刚 朱爱美 王昆山 

作者机构：Key Laboratory of Marine Sedimentology & Environmental GeologyFirst Institute of OceanographyState Oceanic Administration 

出 版 物：《Chinese Journal of Oceanology and Limnology》 (中国海洋湖沼学报（英文版）)

年 卷 期：2013年第31卷第4期

页      面：876-885页

核心收录：

学科分类：070704[理学-海洋地质] 0709[理学-地质学] 07[理学] 0707[理学-海洋科学] 

基　　金：Supported by the National Natural Science Foundation for Young Scientists of China (No.40806026) the National Special Research Fund for the Non-Profit Sector (No.200805063,201205001) the 908 Project of the State Oceanic Administration, China (No.908-02-02-05) the Basic Scientific Research Operations of the First Institute of Oceanography, State Oceanic Administration (Nos.GY02-2008T28,GY02-2009G22) 

主　　题：Huanghe (Yellow) River Bohai Sea major and trace elements grain size heavy metals 

摘      要：Surface sediment samples collected off the Huanghe （Yellow） River mouth during the period 2007-2009 were analyzed for major and trace element concentrations. Concentrations of 16 elements were measured using X-ray fluorescence spectrometry. Results demonstrate that sediment grain size is the dominant factor controlling the spatial variations of elemental concentrations. Correlation and cluster analyses allowed classification of the study area into four geochemical regions： Regions Ⅰ and Ⅲare characterized by high concentrations ofAl2O3, Fe2O3, MgO, Na2O, K2O, Cr, Cu, Mn, Ni, Pb, V, and Zn, and contain fine-grained sediments with mean grain size （Mz）〈22 μm; and; Regions Ⅱ and Ⅳcontain mostly coarse-grained sediments, and are characterized by high concentrations of SiO2, Na2O, and Zr. The sediment entering the sea from the Huanghe River and its tributaries is enriched in Ca. Thus, the Ca/Al ratio was used as an indicator of the proportion of sediments in the study area that originated from the Huanghe River. Ca/Al ratios decrease from Regions Ⅰ and Ⅱ（located in the nearshore zone of the Huanghe River delta） to Regions Ⅲand Ⅳ（distributed in the offshore zone of the northern Huanghe River delta, southern and southeastern Laizhou Bay area）.